Inside blind



(No Model.)

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tion, as will be more fully set forth hereinafter.

NITED STATES FRIEDRICH KELLER, OF MILVAUKEE, IVISCONSIN.

INSIDE BLIND, aw.

SPECIFICATION forming part of Letters Application filed September 2G, 1884.

To aZZ whom it may concern:

Be it known that I, FRIEDRICH KELLER, of Milwaukee, in the county ot' Milwaukee, and in the State of Wisconsin, have invented certain new and useful Improvements in Inside Blinds, &c.; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to window blinds or shutters, and has especial reference to the slats of such as are known as inside blinds; and it consists in certain peculiarities of construc- In the drawings, Figure lis a side elevation of a window blind or shutter provided with my improved devices. Fig. 2 is a horizontal section thereof and Fig. 3 is avertical section, but showing only four slats to avoid confusion of details.

C G represent the blindstilcs, C the top rail, and G2 the bottom rail, of the blinds, and c c represent my improved slats. The upper lap, c, of said slats is made slightly shorter than the lower lap, ci, the outer beveled edges of the blind-Stiles C C being correspondingly projected inward or toward each other, as shown at c This is done to secure ,a longer bearing for the tenons c4 of the slats and to reenforce them, and also to more effectually shut out the light when the slats areclosed, the lower lap, ci, of one slat being thus made to overreach the upper lap ends of the adjacent slat when they are closed. The closing-bar of the slats consists of a single piece, c, of the shape shown in Fig. 3, and this strip or bar is fastenedto one end of each of the slats at the edge of their lowerlaps, c2, by means of screws or nails ci, part of the inner surface of the said bar c being sawed out or removed between each two slats, to allow of the free play of said closingbar and of its fastening-screw or nailheads between said ends of the slats and the adjacent edge of the panel-stile, whichis beveled away, as shown at c7, to further assist in this result, the other stile being likewise beveled away similarlyfor the sake of uniformity of appearance.

In order to form a close joint and exclude the light between the upper edge of the upper slat and the lower edge of the upper rail, C', the outer beveled edge of the said upper rail Patent No. 317,798, dated May l2, 18H5.

(No model.)

is at a more obtuse angle or higher up than the inner beveled edge, es, forming a shoulder, 0; and hence, when the slats are closed, the upper lap, c', of the top slat will rest against said shoulder c, effectually excluding the light at top, as shown by the dotted lines in Fig. 3, and, similarly, the inner beveled edge of the lower rail, Ct, is made at a more obtuse angle or lower down than the outer beveled edge, c1, of said lower rail, thereby forming a corresponding shoulder, c, against which the lower lap, c", of the lowest slat rests when all the slats are closed, thereby intercepting the light at this point, as likewise shown by the dotted lines in Fig. 3. Thus in my improved window-blinds I am enabled to everywhere effectually shut out the light, when required,abo\f'e and below the series of slats, as well as at each side thereof, besides providing a receptacle for the closing-bar cG at one side of the slats, so that the innermost projecting points of the closed slats and closing-bar will be flush with each other-a feature ofimportauce, especially lwhen my improved blinds are used in connection with the sliding devices covered by my application for a patent for improvements in inside blinds filed May 19, 1884:. The slats c c are perfectly fiat on both sides and of the same diameter throughout in cross-section, (except at the edges of their laps, where they are slightly rounded, as showin) and in case one of the slats should become broken its place could be readily supplied by another, inasmuch as the nails or screws c5 are all remov able, and the edge of the lap c2 of the slat against which the bar c is placed is perfectly flat and smooth,without any projections whatever, which would otherwise interfere with the ready removal of a broken slat and the substitution of a new one; and this I deem a valuable feature of my present improvement. I have described my invention with espe cial reference to inside blinds; but it is equally applicable to outside windowshutters.

Vherever I have used the terms inner and outer it is with reference to the location of the blinds in use-that is, outer is next to the window or next to outdoors, and inner is the side next the room or other apartment where the blinds are located when the blinds are closed.

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I am aware of the'patents granted to J. and V. F. Bebel' on July 11, 1876, and G. WV. Morstatt on March 18, 187 9, for improvements in window blinds or shutters, one showing a slat with laps and the other a closing-bai.` analogous to those elements in my device, and I disclaim the said several elements individually; but,

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In window-blinds, the combination of the stiles O C, having overlapping outer beveled edges, c, and inner shorter beveled edges, c?,

with the flat slats c c, having shortlaps c and 15 ,longer laps c?, and tenons et, and the closingbar c, secured by removable nails or screws c5 to and against the perfectly Hat and smooth end edges of the laps c2 at one side of the slats, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand7 at Milwaukee, in the county of Milwaukee and State of Wisconsin, in the presence of two witnesses.

FRIEDRICH KELLER. Vi tuesses:

H. G. UNDERwooD, HENRY'F. KRAFT. 

